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FSC 5990 | Synchros And Resolvers
18CT4A

Model: 18CT4A

Control Transformer Synchro

Properties:

Body Material

Steel, stainless

Body Style

Standard round c

Shoulder Diameter

Between 1.5615 inches and 1.5620 inches

Pilot Diameter

Between 0.9370 inches and 0.9375 inches

Overall Length

3.0600 inches

Flange Diameter

Between 1.7450 inches and 1.7500 inches

Flange Thickness

0.0930 inches

Undercut Diameter

1.6250 inches

Undercut Width

0.0780 inches

Shaft Diameter

0.1870 inches single shaft and 0.1872 inches single shaft

Shaft Length

0.5400 inches single shaft

Maximum Tempurature Rise

20.0 degrees celsius

Body Size

Stator Input Voltage Rating In Volts

90.0

Stator Input Current Rating

7.0 milliamperes

Stator Input Electrical Power Rating

50.0 milliwatts

Frequency In Hertz

400.0

Zso Impedance Magnitude In Ohms

Between 12000.00 and 14800.00

Zso Impedance Angle In Deg

Between 82.00 and 84.50

Zrs Impedance Magnitude In Ohms

Between 980.00 and 1180.00

Zrs Impedance Angle In Deg

Between 42.00 and 52.00

Phase Shift Angle In Deg

2.000 input to output

Maximum Fundamental Null Voltage In Millivolts Per Volt

20.00 output

Maximum Total Null Voltage Output In Millivolts Per Volt

30.00

Electrical Error Angular Range In Minutes

-6.0/+6.0

Spline Tooth Quantity

21 single shaft

Torque Gradient Per Angular Deg

0.100 inch-ounces

Alignment Hole Quantity

Pilot Length

0.0400 inches

Shoulder Length

0.1320 inches

Mounting Surface To Terminal End Distance

2.5200 inches

Spline Tooth Diametral Pitch

120 single shaft

Shaft Thread Series Designator

Unf single shaft

Shaft Thread Direction

Right-hand single shaft

Shaft Thread Class

Terminal Location

Rear

Shaft Thread Length

0.2000 inches single shaft

Shaft Type

Spline w/threads single shaft

Alignment Hole Depth

0.1250 inches

Transformation Ratio

0.735 rotor to stator

Alignment Hole Bolt Circle Diameter

1.2500 inches

Shaft Thread Size

0.190 inches single shaft

Test Data Document

81349-mil-s-20708 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).

Terminal Type And Quantity

5 screw

Specification Data

81349-mil-s-20708/29 government specification

NSN

5990-00-928-5593

Part Number

18CT4A

Description

Synchro,control Transformer

CAGE

98853

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the rotor is dependent upon both the position of the rotor and the electrical input to the stator from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, or variable transformers.

Part 18CT4A NSN 5990-00-928-5593

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15289

FIIG:

A07800

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

1.0000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

062120

UFC:

34760

LTL:

RATING VARIABLE

LCL:

WCC:

593

TCC:

SHC:

ACC:

Trailers/Vehicles

End Items End applications NSN 5990-00-928-5593 is a component of

Jp-5 Aviation Fuels Systems
Non-trident Exterior Communication
An/uya-4(v) Tactical Data System
An/bqs-14a/15 Sonar Sets
Wind Measuring And Indicating System Wmis
Los Angeles Class Ssn (688)
Sturgeon Class Ssn (637)
Ticonderoga Class Cg (47)
Spruance Class Dd (963)
009920076
Height Indicator

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Schedule B and Export

Schedule B: 9014900000
SITC: 87412
End Use: Marine engines, parts
NAICS: 334511
USDA: 1

Freight Class: Parts & accessories for direction finding compasses and other navigational instruments and appliances